LUDLOW FORMATIONS OF THE WEST OF ENGLAND. 373 



(Enonites ixiEQUALis, Hinde, 



(Enonites mcequalis, Hinde, Quart. Journ. Geol. Soc. vol. xxxv. 

 p. 376, pi. xviii. fig. 8. 



The anterior hook is of a more blunted character, and the den- 

 ticles are not so prominent as in the figured examples of this form 

 from the Cincinnati group ; but in these respects it closely agrees 

 with the American specimens from the Clinton group, which I have 

 referred to the same species. Length 1^ line, width J line. 



Loc. and form. Ludlow: Upper Ludlow formation. 



CEnoxites pr^acutus, Hinde. (PI. XIY. fig. 4.) 



Jaw elongated, narrow ; the anterior portion widest, and strongly 

 curved inwards, the posterior extremity obliquely blunted; the 

 anterior tooth incurved, followed by a series of acutely pointed teeth, 

 about thirteen in number. Length | lino. 



This form is allied to (E. incequalis, but may readily be distin- 

 guished therefrom by the incurvature of the primary tooth and the 

 acutely pointed character of the smaller denticles. 



Loc. and form. Much Wenlock : ^^enlock group. 



CExoxites ixsigxificaxs, Hinde. (PI. XIY. fig. 5.) 



Jaw narrow, elongated, of nearly equal width throughout, slightly 

 bent towards the posterior end ; in front a single prominent tooth, 

 followed immediately by six extremely minute denticles, which 

 spring from the anterior third of the upper margin, the remaining 

 portion not showing any denticles. A slightly elevated ridge borders 

 the basal margin. Length J line, 



Loc. and Form. Ludlow : Upper Ludlow group. 



(Enokctes aspersus, Hinde. (PI. XIY. figs. 7 & 8.) 



Jaws composed of an elongated, compressed or slightly concave 

 plate, either rounded or truncate at the posterior extremity, having in 

 front a stout single hook, either in the same plane with or oblique to 

 the main portion of the jaw ; the upper margin nearly straight, in 

 some instances apparently smooth, in others provided with minute 

 crenulations or very numerous small denticles. There is considerable 

 variation in the difi^erent exafhples of this abundant form ; but they 

 aU appear to belong to the same species. One of the largest speci- 

 mens has a length of one line, and is about \ line in width, whilst 

 the smaller forms are about half this size. 



Loc. arid form. Much Wenlock ; AYren's Nest, Dudley : Wenlock 

 Group. Ludlow ; Stoke Edith : Upper Ludlow. 



(Enonites tubulatijs, Hinde. (PI. XIY. fig. 9.) 



Jaw narrow, elongated and subcylindrical, basal margin undu- 

 lated ; the posterior extremity apparently truncate ; anteriorly a 

 relatively stout obliquely curved hook, and on the upper margin a 

 row of minute denticles or crenulations. Length 1 ^ line. 



